Skip to main content
ruadath's user avatar
ruadath's user avatar
ruadath's user avatar
ruadath
  • Member for 10 years, 4 months
  • Last seen more than 6 years ago
  • Cambridge, MA
13 votes
3 answers
848 views

Equality of sums with fractional parts of the form $\sum_{k=1}^{n}k\{\frac{mk}{n}\}$

7 votes
2 answers
328 views

Evaluation of finite sum

5 votes
1 answer
256 views

GCD function and relation between Hurwitz and Riemann zeta function

5 votes
0 answers
106 views

Kloosterman sum and multiples of 16

5 votes
0 answers
123 views

Possible squares that a chess piece can move to

5 votes
0 answers
384 views

Sum over subsets of a multiset

4 votes
1 answer
2k views

How to denote sum over partitions?

4 votes
2 answers
699 views

When does -1 have a squareroot in a finite field? (-1 as a quadratic residue)

4 votes
1 answer
221 views

Interesting Sum Congruence

3 votes
2 answers
2k views

Number of parameters to specify an affine transformation in n dimensions

3 votes
3 answers
292 views

Perfect Square relationship with no solutions

3 votes
3 answers
351 views

Summation of Dedekind sums to zero

3 votes
2 answers
175 views

Dedekind Sum Integrality Result

3 votes
1 answer
1k views

Spectral sequence page isomorphism

3 votes
1 answer
1k views

Why is a simply connected 3-manifold a homotopy 3-sphere?

3 votes
0 answers
136 views

Fractional Part Inequality

3 votes
1 answer
37 views

Nonattacking configurations of bishops on squares of the same color

2 votes
1 answer
80 views

Proving an binomial identity with elementary means

2 votes
1 answer
41 views

Expressing a point in $\mathbb{R}^n$ as a sum of unit vectors

2 votes
1 answer
73 views

Elementary computation of series involving zeta function

2 votes
0 answers
692 views

Cohomology/homology of $K(\mathbb{Z},n)$

2 votes
1 answer
96 views

Integrality Conjectures

2 votes
1 answer
905 views

Factors of a perfect square plus one

2 votes
1 answer
60 views

Solutions to a particular equation of perfect squares

2 votes
0 answers
167 views

The Boggle Problem

2 votes
2 answers
122 views

OEIS for Doubly Indexed Sequences

1 vote
1 answer
762 views

Submatrix rank question

1 vote
1 answer
79 views

Can we characterize the pairs of positive integers $b<a$ such that: $b|(a^2+\gcd(a,b))$

1 vote
1 answer
81 views

Greatest common divisor expression

1 vote
1 answer
115 views

Greatest Common Divisor Summation Simplification